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lambda

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lambda

Main Entry:: lamb·da
Pronunciation:: \ˈlam-də\
Function:: noun
Etymology:: Middle English, from Greek, of Semitic origin; akin to Hebrew lāmedh lamed
Date:: 15th century

1 : the 11th letter of the Greek alphabet — see alphabet table 2 : an uncharged unstable elementary particle that has a mass 2183 times that of an electron and that decays typically into a nucleon and a pion

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